Note 5 - Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]

	For the Year Ended December 31,
	2020			2019
Balance at beginning of period	$	127		$	190
Bad debt expense		227			(27	)
Write-offs		(77	)		(36	)
Other adjustments		196			—
Balance at end of period	$	473		$	127